J.
Welles Wilder: In the early 80's, Welles Wilder founded the Delta
Society International where he sells his Delta trading system.

"… I’ve found that the
most important thing in trading is always doing the right thing,
whether or not you win or lose… this is market savvy… money
management... I would go so far as to say that whether one makes money
in the markets depends on whether or not one uses the proper money
management – how much you make depends on where you enter and exit the
markets."
__ Wilder, J. Welles., "Wilder’s Back," February 1986

It (Robert Taylor's program that uses gravity called Xyber9) all sounds uncomfortably like Delta, but Wilder's group never sued him so I guess it's somehow different.

I'll see if I cannot find a Delta link. It was very secretive back in
the 1980's, but some heavy commodity traders were signing up for it and
I wanted in. I did not, eventually, because I was still trading part
time.

Widler made the mistake of using a sample of it to "prove" it worked,
and by chance used a prediction that had the "Inversion" that you speak
of.

So, Delta was ridiculed & only a small group ever ended up using it.

I used it, successfully, after learning it. But it's a lot of work, and
I gave it up. I still look at patterns the way it is designed to dio,
but only on short time frames.